The present study has identified and measured the concentrations of heavy metals in the body tissue
of Nile Tilapia from the Tono Irrigation facility located in the Kassena-Nankana East District of the Upper East
Region of Ghana. Using Neutron Activation Analysis (NAA), Arsenic, Cadmium, Chromium, Copper, Iron,
Manganese, Nickel, Vanadium and Zinc were identified and their mean concentrations were 0.23, 0.02, 0.2,
1.03, 45.95, 19, 0.21, 0.27 and 12.76 :g/g, respectively. The order of mean concentration of heavy metals in
fish samples was Cd